NOTE: As their name suggests hints are not exactly Alice: Madness Returns cheats, and are usually just simple (but very useful) tips on how you can unlock secret level, features, find hidden areas and such. Hopefully these will make playing Alice: Madness Returns even more entertaining.

Achievements
52 Pick-Up (20): Defeat 52 Card Guards
Armed to the Teeth (30): Fully upgrade all weapons
Beware of the Lagomorph (20): Kill 30 enemies with the Clockwork Bomb
Brollyant (20): Kill 10 Bitch Babies with Deflection
Calm In the Face of Death (30): While on your last Rose, kill 5 Enemies without activating Hysteria
Cold Arms, Cold Heart (30): Defeat the Drowned Sailor without taking any damage
Dead Hatter (10): In American McGee's Alice, Complete Behind the Looking Glass
Death by Darjeeling (10): Acquire the Teapot Cannon
Dress-Ups (10): Equip a Different Domain Dress
End of Innocence (10): Complete Vale of Tears
Everything fit to remember (30): Find all Memories
Eyes on the Size (10): Find the hidden Shrink Sense Decal
Family memories fond and faded (10): Find all Liddell Memories
Full Recovery (50): In American McGee's Alice, Complete the Game
Grandmaster (10): Complete a Chess Puzzle without failing
Grim Folly (10): Complete Wonderland Chapter 2
Grind 'em All! (10): Kill 5 Bolterflies in a row with the Pepper Grinder
Ground Pork (10): Acquire the Pepper Grinder
Hatter's Demise (10): Complete Wonderland Chapter 1
Just peachy (20): Collect all Peaches in the Scroll of Destiny
Level-Headed (50): Finish the game using Hysteria only onceMadness Begins (10): In American McGee's Alice, Complete Village of the Doomed
Madness Prevails (80): Complete the Game on Nightmare Difficulty
More than a Mouthful (20): Fully upgrade a weapon
Neighslayer (10): Hit 4 Enemies With a Single Hobby Horse Ground Smash
No Happy Returns (10): Back to Wonderland
No quarter! No mercy! (20): Defeat 100 Ruin Enemies
Nothing Like the Smell of Bacon (10): Pepper All Snouts in a Chapter
Out of the Woods (10): In American McGee's Alice, Complete Wonderland Woods
Painting the Town Red (30): Complete all Radula Rooms
Pulling Strings (30): Defeat the Dollmaker without taking any damage.
Royal Approach (10): In American McGee's Alice, Complete Queen of Heartsland
Seasoned Campaigner (30): Pepper All Snouts in the Game
Ship of Fools (20): Complete HMS Gryphon without taking Damage
Shooting the Moon (10): Collect 4 Jars of Rose Paint
Skool-Leaver (10): In American McGee's Alice, Complete Fortress of Doors
Snicker-snack! (10): Acquire the Vorpal Blade
Strange Hobby (10): Acquire the Hobby Horse
Strike a Deal (10): Upgrade a Weapon
Tea Party (10): Destroy 10 Ruin Barriers
That's Using Your Head (20): Complete Off With Her Head Part 2 in under 6 minutes
The Beginning of the End (20): Complete Chapter 1 on Nightmare Difficulty
The End of Daze (10): Complete Wonderland Chapter 5
The Harder They Fall (10): Complete Wonderland Chapter 4
The Imaginative Endure (50): Complete the Game on Normal Difficulty
The Persistent Flourish (75): Complete the Game on Hard Difficulty
The Strong Survive (25): Complete the Game on Easy Difficulty
Venting frustration (10): Spend 7 minutes on steam vents
Weapon Schizo (10): Hobby Horse to Vorpal Blade to Hobby Horse Combo
When Worlds Collide (10): Complete Wonderland Chapter 3